1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf265cd4c7501c852f684915cec71d0b79033b5048a64e86f613322913221d825. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4ee5070-7e2d-4660-8f05-6172ecbb6e8f.json and https://artists.proofprofile.net/proofs/artist/c4ee5070-7e2d-4660-8f05-6172ecbb6e8f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde75b880752743fa8f41e140d00d0e692108a2b99607ac40379ffff42988d72c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPWP00770382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26f355e451b1e9ad28fdf8eb0a71725a331a705e4a0ea5f49989e19068a4e87. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB600655305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9f1a87785f0532b675a08f79ebd9f3c0986e801066916e4c8062ac1707d175. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB600709401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a74195fccb535a11dd9916ee660e9cec27df1d2751f343b338a2278d522b8e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB600724612.
THE BEST WAY TO WALK IN THE SKY (Reguler edition-)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5444a68395758f7e4e921a816bce4f51c884607fdb68bd1d67502ade0ced6352. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:39:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPA630500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb531e62d54098a06b83f5f15ab321c1ccfe5938bde24d808a90ae4610ce6a349. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:21:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPWP00203440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c381b15cd7678c771c27f6c67867368b1699e4be68ec4f9e18c5e54b63f2f8e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPWP00205242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68166e523cbc62f47bd81dc1644e099f8150da87001e6f63f2d9151d76b05edf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPWP00207010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707c32758f1459a0f3cf7fd50349e35bb4ff8418a7d27fcba468824cf12db6f2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601026201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec364eaa57f9474b8fc1247d6f277897064ad570b99c9a05487fd71d8ed0644. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601030708.
RYO the SKYWALKER 10th ANNIVERSARY SPECIAL LIVE "RHYME-LIGHT 2010"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23822e4ca1cf4b0e7fd5bf6f211e4a0c51ef27a1d4c242aec22c6237194ece1c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601302997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1d9eba245d1ee11dd3b97668bbfd3b1fba7ca1a463a6121d5fdabc1afe3818. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601401550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368e92d3fe24259a7daf6273d78012c811afcdf14295ba1360dd45e49fcf9033. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601402561.
Vinyl Days (Dancehall Teach Me Everything)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c28e736433bc3b2a28a92a66e1360fb25905ab92b430049921b83ac8f179c9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH371600558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461cf1ecdf68fa4edd1a0f089b5cacbf2acc0e0050d9f5920007ce55a973059d. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPJ1905328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d930376d34ffd33a3f1e225797dd1eb01fdc8e3a2d96abbd32302c46dc7941. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPJ1905722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f60c5d9f71665d3a34ffdc2c20da0d0822c568776a5f886b6737f2b4ea480d3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPK2034201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2b02d93b4e93ec3e94106e9d9345c0f04d1818c7caf988c1f539cccf5e38a2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPM552200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0813a9c3e45af26e46d7a1fbb2e0afb1466d83afee07e65f4aaa81e63579d6e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO01511655.
ずっとスパイシーチョコレート！～BEST OF 渋谷 RAGGA SWEET COLLECTION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6e20b5b40219b19111a5c0bad692d9f85715ecbd61b39eacc6b6c033f12a38. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO01146057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750b899d841f43f7290f48c63e3efe0880ef61bb4320677856ede57dab7b6b3d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO01620945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305e77f126c136b143d107f0f981514f0b5b31f7d0d876eef0380b520e61a4e8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPBV01020201.
STRONG ISLAND (Remix) feat. RYO the SKYWALKER, SKY-HI, SHINGO★西成
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94f4f953803dfe1c8566ddc9cb867b17654b699f686069da323444dea746392. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01410090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabad3ba4b43eac703e7c203ff2053818cff3940e2e09ef1b183547df434c74c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO01410993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6e20b5b40219b19111a5c0bad692d9f85715ecbd61b39eacc6b6c033f12a38. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO01146057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bd5e7cf3c1a0fd5685c3372831b7026d180d2bbdaff5150bdd0eb9a933b7de. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTO01101178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07feabfa38b00efffabf501eddf9798ab1637a6027c01a8d72205f05718b4306. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPM551500173.